CHEMICAL REACTION ENGINEERING QUIZ

Cement mortars richer than 1 : 3 are not used in masonry because(i) There is no gain in strength of masonry(ii) There is high shrinkage(iii) They are prone to segregation

Only (ii) is correct

(ii) and (iii) are correct

(i), (ii) and (iii) are correct

(i) and (ii) are correct

TRUE ANSWER : ?
YOUR ANSWER : ?

The timber floor not spanning on the masonry wall but properly anchored to the wall gives

Rotational restraint but not lateral restraint

Neither lateral nor rotational restraint

Both lateral and rotational restraints

Lateral restraint but not rotational restraint

TRUE ANSWER : ?
YOUR ANSWER : ?

For masonry work with solid bricks, consistency of mortar should be

14 to 18 cm

19 to 23 cm

5 to 8 cm

9 to 13 cm

TRUE ANSWER : ?
YOUR ANSWER : ?

Consider the following statements: The use of relatively weak mortar 1. Will accommodate movements due to loads and, cracking if any, and will be distributed as thin hair cracks which are less noticeable or harmful. 2. Will result in reduction of stresses due to differential expansion of masonry units.

2 alone is correct

1 alone is correct

Both 1 and 2 are correct

Neither 1 nor 2 is correct

TRUE ANSWER : ?
YOUR ANSWER : ?

Assertion A : For eccentricity ratio exceeding 1/6, effective thickness of masonry will get reduced.<br/>Reason R : For eccentricity ratio exceeding 1/6, there will be tension on one side of the member.<br/>Select your answer according to the codes give below:

A is false but R is true

A is true but R is false

Both A and R is true and R is not the correct explanation of A

Both A and R is true and R is the correct explanation of A

TRUE ANSWER : ?
YOUR ANSWER : ?

Direct load carrying capacity of a brick masonry wall standing freely as against when it supports RC slab will be

The same in both the cases

100 %

More

Less

TRUE ANSWER : ?
YOUR ANSWER : ?

Consider the following statements:<br/>1. Masonry in rich cement mortar though having good strength with high shrinkage is much liable for surface cracks.<br/>2. Lime mortar possesses poor workability and poor water retentivity and also suffers high shrinkage.<br/>3. Masonry in lime mortar has better resistance against rain penetration and is less liable to crack when compared to masonry in cement mortar.<br/>Which of these statements are correct?

1 and 2

2 and 3

1 and 3

1, 2 and 3

TRUE ANSWER : ?
YOUR ANSWER : ?

Consider the following statements: The use of relatively weak mortar<br/>1. Will accommodate movements due to loads and, cracking if any, and will be distributed as thin hair cracks which are less noticeable or harmful.<br/>2. Will result in reduction of stresses due to differential expansion of masonry units.

Both 1 and 2 are correct

Neither 1 nor 2 is correct

2 alone is correct

1 alone is correct

TRUE ANSWER : ?
YOUR ANSWER : ?

Assertion A : Lime based mortars give higher ratio of brickwork strength to mortar strength as compared to non-lime mortar.Reason R : Lime based mortars have lower bond strength as compared to non-lime mortars.Select your answer according to the codes given below:

A is true but R is false

Both A and R is true but R is not the correct explanation of A

Both A and R is true and R is the correct explanation of A

A is false but R is true

TRUE ANSWER : ?
YOUR ANSWER : ?

If the eccentricity ratio is more than 1/24, then increase in the permissible stress in the design of wall subjected to eccentric loading as per code is

33? %

25 %

10 %

50 %

TRUE ANSWER : ?
YOUR ANSWER : ?

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